/* reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* content */
html, body {
  height: 100%;
}
#canvas {
  width: 100%;
  height: 100%;
}
.intro {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.intro h2 {
  font-size: 12rem;
  font-weight: bold;
  color: transparent;
  text-shadow: 0 0 1rem rgba(0, 0, 0, .4);
}